Schefter didn't report which teams Copeland is visiting. A 2013 undrafted free agent out of Ivy League Penn, Copeland has had stints with the Titans and Ravens, but never appeared in a regular-season game. NFL.com's Daniel Jeremiah reports Copeland showed "good speed" at last weekend's event. Mar 26 - 8:58 PM

Depth Charts

Lions coach Jim Caldwell used the phrase, "Sometimes, you don't know" when asked about Joique Bell's (Achilles'/knee) timetable for return.

"Like I said, I'm not sure how long it's going to take," Caldwell said. "I do know one thing, that he's coming along quickly, and we'll see what the doctor says. I can't put an exact timetable on it right now. That's the tough thing about even talking about medical. Sometimes you don't know." Bell remains out indefinitely after undergoing offseason Achilles' and knee surgeries.